Lyric discussion by antares 

Well I'm all new to this whole thing but the way I see it, she's talking about how she fell in love with someone just because she could ("just because the sky turned from grey to blue" - i reckon this implies she fell in lvoe with him/her due to circumstance).

And as for the whole Santa Claus thing, she's saying she believes in Saint Nicholas, who was real, as opposed to Santa Claus - who (if you're below ten, look away) wasn't and isn't.

"I believe in St. Nicholas, It's a different type of Santa Claus". I think that's kind of simple, at least by my interpretation. Santa Claus is fictional, wheras Saint Nicholas was real. It's like saying 'I believe in love, it's a different type of fairytale'. I'm guessing.

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